Sonatype Nexus Repository
A repository is a server where artifacts that are used in the build process or produced as the output of the build process are stored. There are various paid and opensource repository solutions. Github and Gitlab often offer a repository as well. JFrog is a great software repository with decent OSS version. Sonatype offers a lot of repository options for maven, npm, apt, docker, helm and a lot of others which are not generally offered by JFrog on their OSS version.